kilonova

A kilonova is a powerful cosmic explosion that occurs when two neutron stars—extremely dense remnants of massive stars—or a neutron star and a black hole merge. This collision releases a tremendous amount of energy, producing a bright burst of light and creating heavy elements like gold and platinum. The event is both a source of intense electromagnetic radiation and gravitational waves, making it crucial for understanding the origins of some elements in the universe. Kilonovae typically fade over days to weeks and are observed by telescopes across various wavelengths.